A lot of times I’m looking at several time-series samples of
numbers embedded in free-form text, and I want to know how the
numbers change over time. For example, two samples of SHOW INNODB
STATUS piped through grep wait might contain the
following:

How much have the numbers changed in the second sample? My head
is too lazy to do that math. So Daniel Nichter and I whipped up
Yet Another Snippet to self-discover patterns of text and
numbers, and compare each line against the previous line that
matches the same pattern. Let’s fetch it:

There’s a new release with a lot of goodies — speed, efficiency,
user-friendliness, and new features. In particular some of
Percona’s clients have sponsored features for things they need
such as the ability to more frequently verify that slaves are in
sync with their masters. If you need features, please ask Percona
[...]

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